Datasheet > AAT4650IAS-T1

AAT4650IAS-T1

更新时间： 2024-09-25 06:35:51

品牌	Logo	应用领域
AAT		开关电源开关 PC
页数	文件大小	规格书
14页	330K
描述
5V/3V PC Card Power Switch

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AAT4650IAS-T1 数据手册

AAT4650

5V/3V PC Card Power Switch

™

SmartSwitch

General Description

Features

The AAT4650 SmartSwitch is a single channel PC

card (PCMCIA) power switch. It is used to select

between two different voltage inputs, each between

2.7V and 5.5V. An internal switch powers the cir-

cuitry from whichever input voltage is higher. The

device's output, V_CC, is slew rate controlled and cur-

rent limited, in compliance with PC card specifica-

tions. The current limit response time to a short cir-

cuit is typically 1µs. The internal P-channel MOSFET

switches are configured to break before make; that

is, both switches cannot be closed at the same time.

Controlled by a 2-bit parallel interface, the four states

for V_CCare V_CC5, V_CC3, high impedance, or ground.

When in the ground state, V_CCis pulled to ground by

a 5kΩ resistor. An open drain FAULT output is

asserted during over-current conditions. During

power-up slewing, FAULT also signals that V_CCis out

of tolerance. An internal over-temperature sensor

forces V_CCto a high impedance state when an over-

temperature condition exists. Quiescent current is

typically a low 15µA, as long as I_CCis less than

approximately 500mA. Above this load current, the

quiescent current increases to 200µA.

•

2.7V to 5.5V Input Voltage Range

80mΩ (5V) Typical R_DS(ON)

Low Quiescent Current 15µA (typ)

Reverse-Blocking Switches

Short-Circuit Protection

Over-Temperature Protection

FAULT Flag Output

Temperature Range: -40°C to +85°C

8-Pin SOP or TSSOP Package

Applications

•

Notebook Computer

PDA, Subnotebook

Power Supply Multiplexer Circuit

The AAT4650 is available in a Pb-free, 8-pin SOP

or TSSOP package and is specified over the -40°C

to +85°C temperature range.

Typical Application

VCC5

V_CC5

V_CC3

VCC3

CTL1

CTL0

FAULT

GND

6,7

VCC

V_CC

CTL1

CTL0

FAULT

AAT4650

CIN5

CIN3

COUT

1μF

0.1μF

GND

4650.2006.05.1.2

12 3 4 5 6 7...14

中文翻译

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